Group Acceptance Sampling Plans

In usual sampling plan as discussed in chapter 3, the decision of accepting or
rejecting a lot is on the basis of a single item. To save time and cost in the life
test, it is very often to put a number of items in a tester. In this life test, a tester is
called a group and the number of items in each tester is called the group size.
The acceptance sampling via the group life test is called the group acceptance
sampling plan (GASP) which is also often implemented under a truncated life
test. For such a type of test, the determination of the sample size is equivalent to
fixation of the number of groups. This type of testers is frequently used in the
case of so-called sudden death testing that is discussed by Pascual and Meeker
(1998) and Vlcek et al. (2004). Recently, Jun et al. (2006) introduced this group
concept into acceptance sampling plan and developed variable sampling plans
for sudden death testing for the Weibull distribution, GASPs under a truncated life
test have been studied by many authors for different lifetime distributions.
Balasooriya (1995), Pascual and Meeker (1998), Wu et al. (2001), Jun et al.
(2006), Aslam and Jun (2009a, 2009b), Rao (2009, 2010) and Aslam et al.
(2011a).